Media Source Extensions (MSE) is a W3C specification that allows JavaScript to send byte streams to media codecs within web browsers that support HTML5 video. Among other possible uses, this allows the implementation of client-side prefetch...

he Open Standard Media Player is an all-in-one media player for the web. It is an industry changing, open source (MIT) media player that is built to dynamically deliver any type of web media, including HTML5, YouTube, Vimeo, Limelight CDN, ...

Market Share by Top Websites

1OSM Player is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2
In terms of market share, Media Source Extensions is clearly lagging behind, losing to OSM Player in all segments.

Websites Categories

1OSM Player has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Music & Audio and 113 other categories.

2Media Source Extensions is leading in Mobile Developers.

Geography

1OSM Player is leading in most countries, including United States, France, Russia, Canada and 92 other countries.

2Media Source Extensions hasn't got a lead over OSM Player in any country.